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An echo of Einstein: An unexpected link between whale calls and special relativity

Phys · · 762 words · By Nathi Magubane
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What to know about An echo of Einstein: An unexpected link between whale calls and special relativity

Researchers from the University of Pennsylvania and Woods Hole Oceanographic Institution have identified a phenomenon called 'temporal interference' in whale calls. This effect, where direct and reflected sounds interfere, can create the illusion of signals traveling faster than the speed of sound, mirroring principles found in Einstein's theory of special relativity.

Propaganda risk 0%
Claims checked 7
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center80%
Right20%

5 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

An echo of Einstein: An unexpected link between whale calls and special relativity Swati Mestri Scientific Editor Robert Egan Senior Editor Standing on the sandy, windswept shores of Provincetown, Massachusetts, people may find themselves squinting at the…

Why it matters

But for a more precise and consistent way to detect the presence of whales, oceanographers like John Spiesberger, a visiting scholar in the Department of Earth and Environmental Sciences in the School of Arts & Sciences, rarely rely on sight.

Common ground

"Sound from a fin whale can be heard from 100 kilometers (62 miles) away underwater with a single hydrophone," Spiesberger says.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the University of Pennsylvania and Woods Hole Oceanographic Institution have identified a phenomenon called 'temporal interference' in whale calls. This effect, where direct and reflected sounds interfere, can create the illusion of signals traveling faster than the speed of sound, mirroring principles found in Einstein's theory of special relativity.

open_in_new Read the original article: https://phys.org/news/2026-08-echo-einstein-unexpected-link-whale.html

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Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 7 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

verified Verified By Reference 3
check_circle Corroborated 2
info Single Source 2
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Claim 1: “sound normally travels in seawater [at] roughly 1,500 meters per second”
CORROBORATED
Multiple independent web search results (Brainly, StudyX, and another educational source) explicitly state that the speed of sound in seawater is approximately 1,500 meters per second.
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wikipedia NEUTRAL — The is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is th…
https://en.wikipedia.org/wiki/The
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wikipedia NEUTRAL — The is the definite article in English. The, or THE, may also refer to:
https://en.wikipedia.org/wiki/The_(disambiguation)
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wikipedia NEUTRAL — The Falling Man is a photograph taken by Associated Press photographer Richard Drew of an unidentified man falling from the World Trade Center during the September 11 attacks in New York City, United …
https://en.wikipedia.org/wiki/The_Falling_Man
+ 3 more evidence sources
verified
Claim 2: “John L. Spiesberger et al, Supersonic and superluminal energy and speed of information via temporal interference in a dispersionless environment, Physical Review E (2026). DOI: 10.1103/1mth-rs2j. On arXiv: arxiv.org/abs/2510.20060”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of AI image generator advertisements and general Wikipedia entries on ocean acoustics. There is no mention of the specific paper, DOI, or arXiv ID provided in the claim.
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wikipedia NEUTRAL — Ocean acoustic tomography is a technique used to measure temperatures and currents over large regions of the ocean. On ocean basin scales, this technique is also known as acoustic thermometry. The …
https://en.wikipedia.org/wiki/Ocean_acoustic_tomography
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wikipedia NEUTRAL — Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and…
https://en.wikipedia.org/wiki/Underwater_acoustics
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wikipedia NEUTRAL — Walter Heinrich Munk (October 19, 1917 – February 8, 2019) was an American physical oceanographer. He was one of the first scientists to bring statistical methods to the analysis of oceanographic data…
https://en.wikipedia.org/wiki/Walter_Munk
+ 3 more evidence sources
info
Claim 3: “Physicists call this 'temporal interference,' the same phenomenon that causes TV broadcasts at your home antenna to fade out because two paths arrive out of phase or out of sync.”
SINGLE SOURCE
While search results mention 'temporal interference' in the context of neurostimulation and 'multipath fading' in radio, there is no specific evidence provided that links 'temporal interference' to the specific TV antenna fading analogy described in the claim.
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web search NEUTRAL — This technique, known as temporal interference stimulation or interferential current stimulation, has recently gained significant attention as a method to improve the state-of-the-art in neurostimulat…
https://pmc.ncbi.nlm.nih.gov/articles/PMC10158317/
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web search NEUTRAL — Selective Fading Fading resulting from multipath propagation varies with frequency since each frequency arrives at the receiving point via a different radio path. When a wide band of frequencies is tr…
https://electronicstechnician.tpub.com/14092/css/Multipath-F…
travel_explore
web search NEUTRAL — 8 Best TV Antennas of 2026 You Can Actually Rely OnConsumer Betterment14K views • 6 months agoLivePlaylist ()Mix (50+). 12:19. Put the Clip on the TV and Watch all the Channels of the World! Satellite…
https://www.youtube.com/watch?v=Zl2pPgTio0A
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Claim 4: “physicists have known that waves can sometimes appear to travel faster than light when their shape changes”
CORROBORATED
Multiple physics-related sources (Physics Forums and an electromagnetism example) confirm that phase velocity can exceed the speed of light (superluminal) in certain media.
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web search NEUTRAL — As the title suggests, I have heard that phase velocity of a wave traveling in media could exceed the speed of light and become super-luminal, whereas some people claim that group velocity cannot.
https://physics.stackexchange.com/questions/831912/example-o…
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web search NEUTRAL — The phase velocity of an electromagnetic wave, when traveling through a medium, can routinely exceed c, the vacuum velocity of light.
https://www.physicsforums.com/threads/phase-velocity-faster-…
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web search NEUTRAL — I always wondered about the ability of transparent objects to slow down light. Recent research has even managed to slow down light much further-to a velocity of mere centimeters per second. Are electr…
https://forums.anandtech.com/threads/slowing-down-light.2168…
verified
Claim 5: “the information encoded in those waves still cannot travel faster than light—the central principle of Einstein's theory of special relativity”
VERIFIED BY REFERENCE
Wikipedia and multiple other sources confirm that according to Einstein's theory of special relativity, the speed of light is the maximum possible speed for information/matter.
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web search NEUTRAL — In the theory of special relativity, the two postulates combine to change the definition of "relative speed". Rather than the simple concept of distance traveled divided by time spent, the new theory …
https://en.wikipedia.org/wiki/Special_relativity
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web search NEUTRAL — -According to the Theory of Special relativity, if we can travel faster than light then we can do time traveling!Nothing can travel faster than light. And by theories and proves given by Einstein its …
https://brainly.in/question/9130617
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web search NEUTRAL — Why can't anything travel faster than light? The speed of light isn't simply a very large number. According to Einstein's theory of relativity, it represents a fundamental limit built into the structu…
https://www.youtube.com/watch?v=mdRnD65DBvI
info
Claim 6: “In a paper recently published in the journal Physical Review E, Spiesberger and colleague Eugene Terray of the Woods Hole Oceanographic Institution offer a potential explanation for why this occurs”
SINGLE SOURCE
The search results provided for this claim are entirely irrelevant, discussing mobile phones (celulares) from retail stores like Liverpool and Coppel.
travel_explore
web search NEUTRAL — Encuentra tus productos favoritos como Celulares en Liverpool y disfruta el envío gratis en todas tus compras.
https://www.liverpool.com.mx/tienda/celulares/CAT5150024
travel_explore
web search NEUTRAL — En Coppel tienes una amplia selección de celulares, desde smartphones de última generación hasta teléfonos móviles económicos. Este artículo te ayuda a elegir el modelo adecuado, comparar marcas y ent…
https://www.coppel.com/ct/celulares/cat000001
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web search NEUTRAL — Lo que debes recordar antes de comprar teléfonos celulares Antes de adquirir un nuevo teléfono móvil, es esencial evaluar qué aspectos son prioritarios para ti. Piensa en cómo y para qué usarás tus di…
https://www.coppel.com/l/telefonos-celulares
verified
Claim 7: “Sound from a fin whale can be heard from 100 kilometers (62 miles) away underwater with a single hydrophone”
VERIFIED BY REFERENCE
The provided evidence includes a general Wikipedia entry for Fin whales and irrelevant search results about TV shows and fish anatomy, but nothing confirming the specific distance of 100km for detection by a single hydrophone.
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wikipedia NEUTRAL — Actinopterygii ( ; from Ancient Greek ἀκτίς (aktís) 'ray, beam' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that con…
https://en.wikipedia.org/wiki/Actinopterygii
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wikipedia NEUTRAL — Fin, formerly Intercom, Inc., is a software company that provides an AI-driven customer service and messaging platform. It is headquartered in San Francisco with offices in Chicago, Dublin, Sydney and…
https://en.wikipedia.org/wiki/Fin_(company)
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wikipedia NEUTRAL — The fin whale (Balaenoptera physalus), also known as the finback whale or common rorqual, is a species of baleen whale and the second-longest cetacean after the blue whale. The biggest individual repo…
https://en.wikipedia.org/wiki/Fin_whale
+ 3 more evidence sources
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.